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Save money! Buy manufacturer direct! Eliminate the middleman!
Since 1987, we've powered over 1.3 million spas with our support systems. We 100% can power your hot tub
with our robust equipment. To get a quotation, you may email photos of your spa support systems to
sales@acuraspa.com.
Call us while you are on our website at 951-684-6667 ext. 223. We will guide you
to design a new spa pack for your hot tub and answer all your hot tub questions.

For years the BN51 has been used by Hayward Pool and Spa Pumps, Waterway Pool and Spa Pumps, American Products Pool and Spa Pumps, Zodiac Pool and Spa Pumps, Sta-Rite Pool and Spa Pumps, Pac Fab Pool and Spa Pumps, Vico Spa Pumps, Balboa Pumps, Aquaflo Spa Pumps, Gecko Spa Pumps, Premier Pool and Spa Pumps, Power Right Industries Spa Pumps and many other spa and pool pump manufactures.

The BN51 was first introduced by Magnetek and continued to be produced by A.O.Smith and Regal Beloit. Currently it is produced under the Centurion name by Regal Beloit.
It replaces all 48 Frame through bolt pool and spa motors with the same specifications that are made by Emerson Electric Motors, Franklin Electric Motors, GE Motors, Marathon Electric Motors, Dynatech Motors, SNTech Motors.

Table () -
BN51 Motor and a separate Wetend for 2" x 2" Plumbing

Table () -
Select a Pump Housing, Spa Motor and DIY*** From the Table Below(DIY) Wetend prices only valid on Table with purchase of a motor

For wetend detail drawings, click above.

Motor + Wetend = Do It Yourself!***
+
=

Table () -
BN51 Motor and a separate Wetend for 1½" x 1½" Plumbing

Table () -
Select a Pump Housing, Spa Motor and DIY*** From the Table Below(DIY) Wetend prices only valid on Table with purchase of a motor

NOTES:
Pump Horsepower:
(cd) Horsepower is the continuous duty output power of the motor or the pump load to the motor.
(spl) Horsepower is used by the hot tub industry (for marketing reasons??).
(bd) Horspower is the motor's maximum load (exceeding this load will burn out the motor).

Model numbers with suffix (-1) indicates the motor is single speed.

Model numbers with no suffix indicate discharge straight up.
Model numbers with suffix (-3) indicates the discharge is to the right.
Model numbers with suffix (-4) indicates the discharge is to the left.

No O.E.M. dealers or distributor discounts with limited offer prices.

All pumps are not provided with unions, unions sold separately. Unions are identified by plumbing dimensions (like 1.5" or 2.0"),
but these numbers ARE NOT the physical outer pipe dimensions.
These numbers indicate the waterflow volume going into and out of the pump.
Please use part numbers as identified for your application.

All electrical work must be performed by a licensed electrician.
All plumbing work must meet I.A.P.M.O., UL 1563, and all local codes and regulations
and must be performed by a licensed plumbing contractor.

Most portable spas and hot tubs are equipped with thru bolt motors, 48-Frame or 56-Frame. When looking for a replacement spa pump motor follow these steps:(1) Look for the label provided by the original electric motor manufacturer Manufacturers include "Century", "Magnetek", "A.O.Smith", "Regal Beloit", "Emerson", "Franklin Electric", "GE", "Centurion", "SNTech", "Dynatech".(2) Identify the voltage required (115 volts or 230 volts), "high" and "low" speeds (spa pump motors are typically 3450 RPM high speed and 1725 RPM low speed). Single speed motors are "high" speed (3450 RPM). Circulating pump motors are "low" speed (1750 RPM).(3) Identify the amperage and ALWAYS choose a replacement motor with the same or higher amperage on high speed.NOTE: All the motors are identified by original motor manufacturer catalogue number. Catalogue numbers are issued by the motor companies to be used by distributors. Motor manufacturers also assign EMI numbers (also known as part numbers) to pump manufacturers to distinguish between distributors and pump manufacturers, however all motors are the same.

**Beating competitor's price: We will meet or beat any competitor's written quotation for hardware of the same capability, such as: plumbing size, voltage, motor horsepower, motor 1 or 2-speed, heater length, safety test report, etc.

***We do not provide assembly instruction for "DIY".
Parts sold as "DIY" are not warranted by Acura Spa Systems, Inc.
Just as tire alignment is critical for tire wear on your car, proper motor shaft alignment to the pump is critical for the longevity of the pump. At Acura Spa System, we use factory made jigs to ensure proper alignment when we assemble the pumps.

A $7 Handling charge is applied to all orders.

All products sold per our "Terms and Conditions" found in the "Support" section of our menu.

When your order is produced, the pump motor used (A.O. Smith, Regal Beloit, Marathon Electric, etc.) will be whatever is in stock in our factory at the time.

All motors are new as supplied to us and tested by the motor manufacturer. Acura Spa Systems only box the motor and ship it. We do not test the motors under the "DIY" program. Our complete pump/motor assemblies are always water tested and assembled properly with the proper alignments.